1. Institute of Environment and Energy Catalysis, School of Materials Science and Chemical Engineering Xi'an Technological University Xi'an Shaanxi 710021 China
2. Shaanxi Key Laboratory of Optoelectronic Functional Materials and Devices, School of Materials Science and Chemical Engineering Xi'an Technological University Xi'an Shaanxi 710021 China
3. School of Sciences Xi'an Technological University Xi'an Shaanxi 710021 China
4. College of Resources and Environmental Engineering Tianshui Normal University Tianshui 741001 China